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Computer Science > Information Theory

arXiv:1903.00136 (cs)
[Submitted on 1 Mar 2019]

Title:A Method Beyond Channel Capacity in the Low SNR Regime: Theoretical Proof and Numerical Confirmation

Authors:Bingli Jiao, Yuli Yang, Mingxi Yin
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Abstract:A method is proposed, referred to as the cocktail BPSK, to use two independent BPSK streams layered in a parallel transmission through the additive white Gaussian channel. The critical point of the method is to translate the interference between the two layered symbols into a problem of one symbol with two possible amplitudes, whereby we find that the achievable data rate (ADR) of the first layer equals to the channel capacity at zero signal-to-noise-ratio limit. By adding the contribution of the second layer, we find that the total ADR of the two layers can be larger than the channel capacity. The theoretical proof is done based on the mutual information and the numerical results are added for the confirmation.
Comments: 3 pages,1 figure, submitted to IEEE Transactions on Information Theory
Subjects: Information Theory (cs.IT)
Cite as: arXiv:1903.00136 [cs.IT]
  (or arXiv:1903.00136v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.1903.00136

Submission history

From: Bingli Jiao [view email]
[v1] Fri, 1 Mar 2019 03:06:28 UTC (97 KB)
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